Home / 8,731.67-12,049.35-4,752.78

Finding the Fourth Proportional to 8,731.67, 12,049.35 and 4,752.78

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Solution

The fourth proportional to 8,731.67, 12,049.35 and 4,752.78 is: 6,558.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.67 : 12,049.35 = 4,752.78 : x
  2. Step 2: Convert to fraction form
    8,731.67/12,049.35 = 4,752.78/x
  3. Step 3: Cross multiply
    8,731.67x = 12,049.35 × 4,752.78
  4. Step 4: Simplify right side
    8,731.67x = 57,267,909.69
  5. Step 5: Solve for x
    x = 57,267,909.69/8,731.67
  6. Step 6: Final answer
    x = 6,558.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.